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Neonatal mortality [message #13420] Sun, 05 November 2017 07:56 Go to next message
asmita1101 is currently offline  asmita1101
Messages: 1
Registered: November 2017
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Hello!

I am looking to calculate neonatal mortality rates using Indian DHS data for 2005-06 for the most recent child born to mothers in the past 5 years prior to the survey. While the stata code to calculate neonatal mortality is clear, I'm not sure how to account for the 'most recent child'.

Can somebody please help me out?

Thanks in advance!
Re: Neonatal mortality [message #13495 is a reply to message #13420] Fri, 10 November 2017 09:45 Go to previous messageGo to next message
Liz-DHS
Messages: 1516
Registered: February 2013
Senior Member
Dear User,
This post from one of our experts, Mr. Trevor Croft should help: http:// userforum.dhsprogram.com/index.php?t=msg&th=4424&got o=8433&#msg_8433
In addition, The Guide to DHS Statistics http:// www.dhsprogram.com/publications/publication-dhsg1-dhs-questi onnaires-and-manuals.cfm Starting on Page 92 has an explanation of the calculations needed for neonatal mortality.
Thank you for your post.
Re: Neonatal mortality [message #23607 is a reply to message #13495] Wed, 20 October 2021 04:46 Go to previous messageGo to next message
Pooja Arora is currently offline  Pooja Arora
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Registered: February 2019
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Why does the "DHS guide to statistics" say that neonatal mortality is death between 0 to 30 days, when it should be 28 days?
Re: Neonatal mortality [message #23608 is a reply to message #23607] Wed, 20 October 2021 08:49 Go to previous messageGo to next message
Bridgette-DHS is currently offline  Bridgette-DHS
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Registered: February 2013
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Following is a response from DHS Research & Data Analysis Director, Tom Pullum:

Thank you for catching this. The current version of the Guide to DHS Statistics is supposed to say 28 days.

Keep in mind that in almost all settings where DHS surveys are conducted, there is not a reliable vital statistics system. Age at death is based on recall of an event that may have occurred many years ago. The mother will not be concerned about the difference between 28, 29, or 30 days.

Age at death is supposed to be reported in days, if less a month. The length of a calendar month in the Gregorian calendar is not fixed--it can be 28, 29, 30, or 31 days (for some purposes we interpret it as 365.25/12=30.4375 days).

If you look at the distribution of b6 in any BR file you will see that there are almost no deaths reported at 28 or 29 or 30 days or in the days just before 28. It is very likely that some late neonatal deaths are actually reported at "1 month", which displaces them OUT of the neonatal period. That's probably more common than over-reporting of late neonatal deaths because of slippage between 28 and 30.

There is a measurement issue here, but you are certainly correct about the official definition of a neonatal death and we want to be consistent with that. We'll fix it.
Re: Neonatal mortality [message #23613 is a reply to message #23608] Wed, 20 October 2021 12:47 Go to previous messageGo to next message
Pooja Arora is currently offline  Pooja Arora
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Registered: February 2019
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Thank you for such an insightful reply. I am analysing India's NFHS-4 2015-16 data. Here, lot of heaping is there on day-30. So, there is a chance that we might underestimate the NMR.

And if we go by the correct definition of first 28 days, then the STATA code should be <=27 because we are also considering day-0 as the first day. Hence, day0 to day27 completes the first 28 days period.
Re: Neonatal mortality [message #23615 is a reply to message #23613] Wed, 20 October 2021 15:10 Go to previous message
Bridgette-DHS is currently offline  Bridgette-DHS
Messages: 2472
Registered: February 2013
Senior Member


Following is a response from DHS Research & Data Analysis Director, Tom Pullum:

Right--the official definition of the NNMR refers to 0-27 days (does not include 28). However, I think if you compared the alternative definitions, and calculated confidence intervals, they would overlap almost entirely. There would only be a few situations--for example if you were calibrating survey data against vital registration data--in which the difference would be important. But I hope we can update the Guide to DHS Statistics to make the distinction clearer.
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